package com.zkingsoft.zkingbase.utils;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.telephony.TelephonyManager;

/**
 * 网络请求工具类
 */
public class NetUtil
{

    public static boolean isNetworkAvailable(Context context)
    {
        // 获取手机所有连接管理对象（包括对wi-fi,net等连接的管理）
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

        if (connectivityManager == null)
        {
            return false;
        } else
        {
            // 获取NetworkInfo对象
            NetworkInfo[] networkInfo = connectivityManager.getAllNetworkInfo();

            if (networkInfo != null && networkInfo.length > 0)
            {
                for (int i = 0; i < networkInfo.length; i++)
                {
                    // 判断当前网络状态是否为连接状态
                    if (networkInfo[i].getState() == NetworkInfo.State.CONNECTED)
                    {
                        return true;
                    }
                }
            }
        }
        return false;
    }

    public static String GetNetworkType(Context context)
    {
        String strNetworkType = "未连接";

        NetworkInfo networkInfo = ((ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE)).getActiveNetworkInfo();
        if (networkInfo != null && networkInfo.isConnected())
        {
            if (networkInfo.getType() == ConnectivityManager.TYPE_WIFI)
            {
                strNetworkType = "WIFI";
                WifiManager manager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
                if (manager != null)
                {
                    WifiInfo info = manager.getConnectionInfo();
                    int rssi = info.getRssi();
                    strNetworkType += "\u3000WIFI信号强度：[" + (100 - Math.abs(rssi)) + "]";
                }
            } else if (networkInfo.getType() == ConnectivityManager.TYPE_MOBILE)
            {
                String _strSubTypeName = networkInfo.getSubtypeName();

                int networkType = networkInfo.getSubtype();
                switch (networkType)
                {
                    case TelephonyManager.NETWORK_TYPE_GPRS:
                    case TelephonyManager.NETWORK_TYPE_EDGE:
                    case TelephonyManager.NETWORK_TYPE_CDMA:
                    case TelephonyManager.NETWORK_TYPE_1xRTT:
                    case TelephonyManager.NETWORK_TYPE_IDEN: //api<8 : replace by 11
                        strNetworkType = "2G";
                        break;
                    case TelephonyManager.NETWORK_TYPE_UMTS:
                    case TelephonyManager.NETWORK_TYPE_EVDO_0:
                    case TelephonyManager.NETWORK_TYPE_EVDO_A:
                    case TelephonyManager.NETWORK_TYPE_HSDPA:
                    case TelephonyManager.NETWORK_TYPE_HSUPA:
                    case TelephonyManager.NETWORK_TYPE_HSPA:
                    case TelephonyManager.NETWORK_TYPE_EVDO_B: //api<9 : replace by 14
                    case TelephonyManager.NETWORK_TYPE_EHRPD:  //api<11 : replace by 12
                    case TelephonyManager.NETWORK_TYPE_HSPAP:  //api<13 : replace by 15
                        strNetworkType = "3G";
                        break;
                    case TelephonyManager.NETWORK_TYPE_LTE:    //api<11 : replace by 13
                        strNetworkType = "4G";
                        break;
                    default:
                        if (_strSubTypeName.equalsIgnoreCase("TD-SCDMA") || _strSubTypeName.equalsIgnoreCase("WCDMA") || _strSubTypeName.equalsIgnoreCase("CDMA2000"))
                        {
                            strNetworkType = "3G";
                        } else
                        {
                            strNetworkType = _strSubTypeName;
                        }

                        break;
                }

            }
        }
        return strNetworkType;
    }
}


